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Short answer: any smart switch wired into 230 V mains in Australia must hold Australian electrical safety approval (still called SAA approval) and be installed by a licensed electrician. Check the approval number on the device and on the national EESS register before you buy, including Amazon and AliExpress imports. Arklyfe's StellarTrack Matter switch is approved under certificate GMA-528353-EA.

Short answer: Matter over Thread is the new default for most new Australian smart homes — it works natively with Apple Home, Google Home, Alexa and SmartThings without hub lock-in. Zigbee still wins on price for existing hub owners; Z-Wave only makes sense for sprawling rural properties. Compare all three protocols on speed, range, ecosystem support, AU retail availability and SAA certification.